Service manual

181 CID (3.0L) 4 CYLINDER GM ENGINE
SERVICE MANUAL NUMBER 26
90-861329--1 MARCH 1999 Page 3A-17
Rocker Arm/Push Rod
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e
a
b
c
d
Valve Mechanism
a-Nut
b-Ball Unit
c-Rocker Arm
d-Push Rod
e-Rocker Arm Stud
Removal
NOTE: When servicing only one cylinder’s rocker arms, bring that cylinder’s piston up to
TDC before removing rocker arms. When servicing all rocker arms, bring No. 1 piston up
to TDC before removing rocker arms.
1. Remove rocker arm covers as outlined.
2. Remove rocker arm assemblies and push rods.
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IMPORTANT: Place rocker arm assemblies and push rods in a rack for reassembly
in their original locations.
Cleaning and Inspection
1. Clean parts with solvent and dry with compressed air.
2. Inspect all contact surfaces for wear. Replace all damaged parts.
Index